摘要
目的研究心肌桥对壁冠状动脉血流量的影响。方法利用心肌桥模拟装置,建立壁冠状动脉受压迫状态的圆形收缩模型,并进行心肌桥在收缩期到舒张期影响壁冠状动脉血流量的数值模拟,用有限元软件CFD对数值进行模拟分析。结果在血管狭窄部位血流主要为高速层流,随压迫程度增大,高速层流区流速加快。在同一心率、同一血压范围内,流速随着收缩程度的增大而加快。结论心肌桥对冠状动脉压力和流量的影响与其对冠状动脉的压迫程度和频率有关。
Objective To study the effect of the myocardial bridge on the blood flow of the coronary artery. Methods The authors made a myocardial bridging simulation device and built an experimental model to study the oppressed status of the mural coronary artery. Through simulating the effect of the myocardial bridge on the blood flow of the coronary artery from systole to diastole, and with the help of a CFD software, a simulation analysis of the experiment data was made. Results There was mainly high-speed laminar flow in the narrow position of the blood vessel. The velocity of the high-speed laminar flow increased with the increment of the compression percentage. With the same heart rate and in the same range of blood pressure, the velocity of blood flow increased with the increment of the compression percentage. Conclusion The influence of myocardial bridge on the pressure and blood flow of the coronary artery has close ties to the degree and frequency of the pressure on the coronary artery.
出处
《上海交通大学学报（医学版）》
CAS
CSCD
北大核心
2006年第2期166-168,共3页
Journal of Shanghai Jiao tong University:Medical Science
